Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

Annotations already declare readOnlyHint=true and openWorldHint=false, so safety and locality are covered. The description adds useful return content (room types, rate plans, total stay price, booking link), but says nothing about what happens when nothing is available, whether prices include taxes/fees, or whether results are paginated. With annotations carrying the safety profile, this is adequate but thin.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Is the description appropriately sized, front-loaded, and free of redundancy?

A single front-loaded sentence that names the resource, the inputs, and the outputs with no filler. It is dense but every clause carries information; only the missing context, not verbosity, is the issue.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

There is no output schema, so the description must define the return value, and it does list the key fields (room type, rate plan, stay price, booking link). However, for a 4-parameter pricing tool it omits date format expectations, currency, tax/fee treatment, and the no-availability case, leaving meaningful gaps.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema description coverage is only 25% — only property_code is documented. The description implies check_in/check_out are the 'dates' but gives no format, and says nothing about adults (default 2, max 12) and how occupancy filters available room types. It fails to compensate for the low coverage, which matters most for the date strings and the occupancy filter.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Does the description clearly state what the tool does and how it differs from similar tools?

The description states a specific resource and scope: available room types and rate plans for one villa over given dates, with stay price and a booking link. That distinguishes it from search_villas (which finds villas) and from villa_details (static property info), though it never explicitly says 'get prices/availability for a single property' as a verb framing.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Does the description explain when to use this tool, when not to, or what alternatives exist?

Usage is implied rather than stated: the property_code parameter notes it comes from search_villas, so the natural workflow (search, then check this villa) is discoverable. There is no explicit when-to-use-this-vs-current_offers guidance and no exclusions or prerequisites such as date ordering.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.